package com.naihe.anderson.sms.util;

import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;

import android.app.Activity;
import android.graphics.Bitmap;
import android.graphics.Rect;
import android.view.View;

public class ScreenShot {

	 // 获取指定Activity的截屏，保存到png文件  
    private static Bitmap takeScreenShot(Activity activity){  
        //View是你需要截图的View  
        View view = activity.getWindow().getDecorView();  
        view.setDrawingCacheEnabled(true);  
        view.buildDrawingCache();  
        Bitmap b1 = view.getDrawingCache();  
           
        //获取状态栏高度  
        Rect frame = new Rect();    
        activity.getWindow().getDecorView().getWindowVisibleDisplayFrame(frame);    
        int statusBarHeight = frame.top;    
           
        //获取屏幕长和高  
        int width = activity.getWindowManager().getDefaultDisplay().getWidth();    
        int height = activity.getWindowManager().getDefaultDisplay().getHeight();    
        //去掉标题栏  
        Bitmap b = Bitmap.createBitmap(b1, 0, statusBarHeight, width, height - statusBarHeight);  
        view.destroyDrawingCache();  
        Bitmap backPic = ImageUtil.zoomBitmap(b, 0.5f, 0.5f);
        if(!b.isRecycled()){
        	b.recycle();
        	b = null;
        }
        return backPic;  
    }  
       
    //保存到sdcard  
    private static void savePic(Bitmap b,String strFileName){  
        FileOutputStream fos = null;  
        try {  
            fos = new FileOutputStream(strFileName);  
            if (null != fos)  
            {  
                b.compress(Bitmap.CompressFormat.PNG, 90, fos);  
                fos.flush();  
                fos.close();  
            }  
        } catch (FileNotFoundException e) {  
            e.printStackTrace();  
        } catch (IOException e) {  
            e.printStackTrace();  
        }  
    }  
       
    //程序入口  
    public static void shoot(Activity activity, String filePathName){
    	ScreenShot.savePic(ScreenShot.takeScreenShot(activity), filePathName);  
    }  
}
